Chapter
8.
Replacing
FRUs
(Machine
types:
9120,
9127,
9129,
9134,
9136,
9139,
9141,
9143,
9156,
9158,
9171,
and
9191.)
Important
Be
sure
to
read
and
understand
the
Chapter
2,
“Safety
information,”
on
page
3
before
replacing
any
FRUs.
These
precautions
and
guidelines
will
help
you
work
safely.
FRU
replacements
are
to
be
done
by
trained
service
technicians
only.
This
chapter
does
not
contain
a
remove
and
replace
procedure
for
all
FRUs.
Only
the
major
FRUs
are
documented.
©
Lenovo
2005,
2009.
Portions
©
IBM
Corp.
2005.
85
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